package com.witframework.baseapp.security;


public class UsernameChecker {
	public String check(String arg0){
		if(com.witframework.core.WitFrameWork.getBaseHibernateDao(BaseUser.class).findBy("username",arg0).size()>0)
			return "用户名已存在，请重新输入";
		return null;
	}
}
